arch/arm/boot/dts/overlays/gpio-ir-overlay.dts

   1 // Definitions for ir-gpio module
   2 /dts-v1/;
   3 /plugin/;
   4
   5 / {
   6         compatible = "brcm,bcm2835";
   7
   8         fragment@0 {
   9                 target-path = "/";
  10                 __overlay__ {
  11                         gpio_ir: ir-receiver@12 {
  12                                 compatible = "gpio-ir-receiver";
  13                                 pinctrl-names = "default";
  14                                 pinctrl-0 = <&gpio_ir_pins>;
  15
  16                                 // pin number, high or low
  17                                 gpios = <&gpio 18 1>;
  18
  19                                 // parameter for keymap name
  20                                 linux,rc-map-name = "rc-rc6-mce";
  21
  22                                 status = "okay";
  23                         };
  24                 };
  25         };
  26
  27         fragment@1 {
  28                 target = <&gpio>;
  29                 __overlay__ {
  30                         gpio_ir_pins: gpio_ir_pins@12 {
  31                                 brcm,pins = <18>;                       // pin 18
  32                                 brcm,function = <0>;                    // in
  33                                 brcm,pull = <2>;                        // up
  34                         };
  35                 };
  36         };
  37
  38         __overrides__ {
  39                 // parameters
  40                 gpio_pin =      <&gpio_ir>,"gpios:4",           // pin number
  41                                 <&gpio_ir>,"reg:0",
  42                                 <&gpio_ir_pins>,"brcm,pins:0",
  43                                 <&gpio_ir_pins>,"reg:0";
  44                 gpio_pull = <&gpio_ir_pins>,"brcm,pull:0";              // pull-up/down state
  45                 invert = <&gpio_ir>,"gpios:8";                          // 0 = active high input
  46
  47                 rc-map-name = <&gpio_ir>,"linux,rc-map-name";           // default rc map
  48         };
  49 };